Application of Laser Re-melting on selective laser melting parts

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Additive manufacturing: Challenges, trends, and applications (2019, background): “Although this technology possesses a great potential, however, the implementation in industries is limited due to several obstacles.(31,32) One of the primary hindrances is the presence of high residual stresses and large deformations in the part.”
Laser polishing of 3D printed mesoscale components (2017, background): “As for parts manufactured via selective laser melting ( SLM), several publications have concluded that a LP step after each intermediate layer (20-30 μm thickness) or following deposition of the final layer can be beneficial for improving component surface integrity [2, 38-40].”
Microstructure and mechanical properties of selective laser melted Inconel 718 compared to forging and casting (2016, background): “SLM provides the possibility to produce for example integrated cooling systems and conduits in casings and parts [4,5].”